johncena109 johncena109

09-02-2017
Chemistry

contestada

which of the following advances in food production were attributed to the green revolution of the 1960s and 1970s
a.improved irrigation systems
b.improved land availability
c.gentically engineered crops
d.drought-resistant varieties of crop plants

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Аноним Аноним

09-02-2017

your answer would be b

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